01 -
Preheat oven to 350°F (175°C). Grease a 13x9-inch baking pan.
02 -
In a large bowl, combine the instant chocolate pudding mix and 2% milk until fully blended.
03 -
Stir the chocolate or devil's food cake mix into the pudding mixture; the batter will be thick.
04 -
Gently fold in the chopped peanut butter cups, peanut butter chips, and semisweet chocolate chips.
05 -
Spread the batter evenly into the prepared baking pan. Sprinkle the top with chopped unsalted peanuts.
06 -
Bake for 20-25 minutes, or until a toothpick inserted in the center comes out with moist crumbs.
07 -
Allow the cake to cool completely in the pan on a wire rack. Serve with vanilla ice cream or whipped cream if desired.